scsi: be2iscsi: Fix _modify_eq_delay buffer overflow

beiscsi_modify_eq_delay is using embedded command to send request of 788
bytes in 236 bytes buffer. Non-embedded command needs to be used in such
cases.

Use mgmt_alloc_cmd_data fn modified to allow passing of subsystem.  Use
mgmt_exec_nonemb_cmd fn modified to allow setting of callback.
Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/be2iscsi/be_cmds.c

@@ -675,7 +675,7 @@ static int be_mbox_notify(struct be_ctrl_info *ctrl)
 	return status;
 }
 
-void be_wrb_hdr_prepare(struct be_mcc_wrb *wrb, int payload_len,
+void be_wrb_hdr_prepare(struct be_mcc_wrb *wrb, u32 payload_len,
 			bool embedded, u8 sge_cnt)
 {
 	if (embedded)
@@ -688,7 +688,7 @@ void be_wrb_hdr_prepare(struct be_mcc_wrb *wrb, int payload_len,
 }
 
 void be_cmd_hdr_prepare(struct be_cmd_req_hdr *req_hdr,
-			u8 subsystem, u8 opcode, int cmd_len)
+			u8 subsystem, u8 opcode, u32 cmd_len)
 {
 	req_hdr->opcode = opcode;
 	req_hdr->subsystem = subsystem;

drivers/scsi/be2iscsi/be_cmds.h

@@ -1444,9 +1444,9 @@ struct be_cmd_get_port_name {
 						 * the cxn
 						 */
 
-void be_wrb_hdr_prepare(struct be_mcc_wrb *wrb, int payload_len,
+void be_wrb_hdr_prepare(struct be_mcc_wrb *wrb, u32 payload_len,
 			bool embedded, u8 sge_cnt);
 
 void be_cmd_hdr_prepare(struct be_cmd_req_hdr *req_hdr,
-			u8 subsystem, u8 opcode, int cmd_len);
+			u8 subsystem, u8 opcode, u32 cmd_len);
 #endif /* !BEISCSI_CMDS_H */